Function int_to_base

maths/special_numbers/harshad_numbers.py:8–53

Convert a given positive decimal integer to base 'base'. Where 'base' ranges from 2 to 36. Examples: >>> int_to_base(0, 21) '0' >>> int_to_base(23, 2) '10111' >>> int_to_base(58, 5) '213' >>> int_to_base(167, 16) 'A7' >>> # bases below 2 and beyond 3

(number: int, base: int)

def int_to_base(number: int, base: int) -> str:
    """
    Convert a given positive decimal integer to base 'base'.
    Where 'base' ranges from 2 to 36.

    Examples:
    >>> int_to_base(0, 21)
    '0'
    >>> int_to_base(23, 2)
    '10111'
    >>> int_to_base(58, 5)
    '213'
    >>> int_to_base(167, 16)
    'A7'
    >>> # bases below 2 and beyond 36 will error
    >>> int_to_base(98, 1)
    Traceback (most recent call last):
        ...
    ValueError: 'base' must be between 2 and 36 inclusive
    >>> int_to_base(98, 37)
    Traceback (most recent call last):
        ...
    ValueError: 'base' must be between 2 and 36 inclusive
    >>> int_to_base(-99, 16)
    Traceback (most recent call last):
        ...
    ValueError: number must be a positive integer
    """

    if base < 2 or base > 36:
        raise ValueError("'base' must be between 2 and 36 inclusive")

    digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    result = ""

    if number < 0:
        raise ValueError("number must be a positive integer")

    while number > 0:
        number, remainder = divmod(number, base)
        result = digits[remainder] + result

    if result == "":
        result = "0"

    return result


def sum_of_digits(num: int, base: int) -> str: